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Vanilla 1.1.10 is a product of Lussumo. More Information: Documentation, Community Support.
Added a subsection
As a homotopy type
As a homotopy type the torus is the product of two copies of the circle.
In homotopy type theory the torus can be formalized as the higher inductive type generated by a point
base
, two paths, and , frombase
to itself, and an element of . It has been formally shown (Sojakova15) that this type is equivalent to the product of two circles. For a treatment in cubical type theory, see (Licata-Brunierie).
Added topological complexity of tori.
It may be time to create at least a minimum entry on topological complexity, as you keep pointing to it.
I am already on it. The page will be published within the next hour.
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